Kai Yu has been working with synths, making music and DJing since 1988. In 2001 He wrote the "2001 Electronic Dance Music Bible" with four friends, notable because it's the first book about dance music written in Chinese. In 2003, at the Mandarin-speaking world's equivalent of the Oscars, Kai Yu won the Golden Horse Award for Best Original Music for Film together with Lim Giong.

Currently, Kai Yu performs live with Ableton Live, Push and M4L visuals as fish.the. He's also a member of the San-Sheng-Xian-Yi supergroup.

In 2014, Kai Yu founded the Crash Course Electronic Music, a group focused on teaching electronic music to aspiring musicians. He has also taught Computer Music in Practice at Chung Yuan University since 2007. Kai Yu teaches group and one-on-one lessons on topics including Ableton Live for beginners, Push in-depth, integrating synths and controllers with Ableton Live, Advanced DJing, music-making, remixing, live performance techniques and more.

Kai Yu gathered three years of experience working for Taiwan’s distributor for Ableton, Novation and Korg between 2011 and 2014.